From 4c1af137e0f6f1617757f370258e556e6c2a11fa Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 10 Mar 2010 11:01:17 +0000
Subject: [PATCH] Based on a suggestion from Chuck Seberino, have added a
 section for testing of 64bit build under OSX and disable the use of quicktime
 when the build includes 64bit.

---
 CMakeModules/FindQuickTime.cmake | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/CMakeModules/FindQuickTime.cmake b/CMakeModules/FindQuickTime.cmake
index 17ae700bf..dceb3897c 100644
--- a/CMakeModules/FindQuickTime.cmake
+++ b/CMakeModules/FindQuickTime.cmake
@@ -15,7 +15,7 @@
 IF(APPLE)
   FIND_PATH(QUICKTIME_INCLUDE_DIR QuickTime/QuickTime.h)
   FIND_LIBRARY(QUICKTIME_LIBRARY QuickTime)
-ELSE(APPLE)
+ELSE()
   FIND_PATH(QUICKTIME_INCLUDE_DIR QuickTime.h
     $ENV{QUICKTIME_DIR}/include
     $ENV{QUICKTIME_DIR}
@@ -39,11 +39,24 @@ ELSE(APPLE)
     PATH_SUFFIXES lib64 lib
   )
   FIND_LIBRARY(QUICKTIME_LIBRARY QuickTime)
-ENDIF(APPLE)
+ENDIF()
+
 
 SET(QUICKTIME_FOUND "NO")
 IF(QUICKTIME_LIBRARY AND QUICKTIME_INCLUDE_DIR)
   SET(QUICKTIME_FOUND "YES")
-ENDIF(QUICKTIME_LIBRARY AND QUICKTIME_INCLUDE_DIR)
-
+ENDIF()
 
+IF(APPLE)
+    #Quicktime is not supported under 64bit OSX build so we need to detect it and disable it.
+    #First check to see if we are running with a native 64-bit compiler (10.6 default) and implicit arch
+    IF(NOT CMAKE_OSX_ARCHITECTURES AND CMAKE_SIZEOF_VOID_P EQUAL 8)
+        SET(QUICKTIME_FOUND "NO")
+    ELSE()
+        #Otherwise check to see if 64-bit is explicitly called for.
+        LIST(FIND CMAKE_OSX_ARCHITECTURES "x86_64" has64Compile)
+        IF(NOT has64Compile EQUAL -1)
+            SET(QUICKTIME_FOUND "NO")
+        ENDIF()
+    ENDIF()
+ENDIF()